drop ubuntu-18.04

fangq · fangq · commit aa1c2a4a7a3f · 2023-04-09T10:45:49.000-04:00
diff --git a/.github/workflows/run_test.yml b/.github/workflows/run_test.yml
@@ -7,7 +7,7 @@ jobs:
     name: Octave tests
     strategy:
       matrix:
-        os: [ubuntu-18.04, ubuntu-20.04, ubuntu-22.04, macos-11, windows-2019]
+        os: [ubuntu-20.04, ubuntu-22.04, macos-11, windows-2019]
     runs-on: ${{ matrix.os }}
     defaults:
       run:
